height = 1.75
weight = 80.5
bmi = weight / (height ** 2)
if bmi < 18.5:
    print("小明的BMI指数是：", bmi, "过轻")
elif 18.5 <= bmi < 25:
    print("小明的BMI指数是：", bmi, "正常")
elif 25 <= bmi < 28:
    print("小明的BMI指数是：", bmi, "过重")
elif 28 <= bmi < 32:
    print("小明的BMI指数是：", bmi, "肥胖")
else:
    print("小明的BMI指数是：", bmi, "严重肥胖")
